Double cylinder pump



J. C. GORMAN, In.

DOUBLE CYLINDER PUMP.

APPHCATION FILED AUG.2I. 1913.

1,308,238. Patented July 1, 1919.

3 SHEETS-SHEET 1.

1. C. GORMAN, JR.

DOUBLE CYLINDER PUMP.

APPLLCATION FILED AUG.2|, 191s.

Patented July 1, 1919.

3 SHEETS-SHEET 2.

J. C. GORMAN, JR.

[mum (zvuwmn PUMP.

f APPLICATION FILED AUGZI I918. 4 1 mm iui'vnt'maajl July 1, P319.

ENT OFFICE.

JAMES GVILL GORE/IAN, JR, 0F MANSFIELD, OHIO, ASSIGNOR T0 BARNES MANUFAC- TURDTG- COMPANY, OF MANSFIELD, OHIU, A CORPORATION OF OHIO.

DOUBLE-CYLINDER PUMP.

Specification of Letters Patent.

Application filed August 21, 19-18. Serial No. 250,790.

To all whom it may concern:

Be it known that 1, James C. GORMAN, Jr., a citizen of the United States, residing at Mansfield, in the county of Richland and State of Ohio, have invented certain new and useful Improvements in Double-Cylinder Pumps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as-will enable others skilled in the art to *which'it appertains to make and use the same.

This invention relates to pumps, and more particularly to an improvement upon the pump invented by me and patented May 1, 1917, No. 1,224,532. r

The object of my present invention is to produce a long, narrow and low pump of the character referred to having two horizon tally disposed cylinders and water-ways all cast in one piece with the jack, and consisting as a whole of few parts, adapted to be easily and quickly assembled and readily taken apart, and which is inexpensive in manufacture and eflicient and durable in practical use, being specially adapted for use in mining work, where the gangways are narrow, and capable of being easily mounted upon trucks for portable work.

lhe invention will first be hereinafter more particularly described, with reference to the accompanying drawings, which form a part of this specification, and then pointed out in the claims at the end of the description.

In said drawings Figure 1 is a perspective view of adouble cylinder pump embodying my invention;

Fig. 2 is a perspective view of the pump body or casing and integral jack, the operating parts being removed;

Fig. 3 is a vertical sectional elevation of the pump, some of the parts being omitted; Fig. l is a horizontal sectional view taken on the line 4-f of Fig. 3;

Fig. 5 is a vertical transverse section taken on the line of Fig. 3: looking in the direction of the arrows:

Fig. (i is a vertical transverse section taken on the line 66 of Fig. 3; looking in the direction of the arrows;

Fig. 7 is a detail plan view of the crosshead and plungers attached thereto. ,to-

gather with the guide rods on which the" cross-head slides; and.

Fig. 8 is a rear elevation of the bolster usedsfor securing the removable cylinder head in place-.

Referring to said drawings, in which the same reference letters are used to denote corresponding parts in different views, the pump body or casing and the jack, as shown, are cast in one integral structure with provision for attaching the operating parts and suitable driving gearing, including suitable shaft-supporting bearings formed integrally with said ack, which is denoted by the let ter B, and which is substantially identical with the jack shown in my aforesaid patent, so that further description herein of the jack itself appears to be unnecessary. The pump body or casing, as shown, has two cylinders A and A each open at both ends, and arranged in the same horizontal plane and in the plane of the front shaft-supporting bearing on the jack, and each cylinder has formed thereon, at its outer end, upper and lower tubular bosses or vertical extensions a and a the upper ones of which are connected by a horizontal tubular water-way a? and the lower ones by a similar water-way a, said horizontal waterway being integral with the vertically disposed watpnways formed by the tubular bosses a and a at the outer ends of the cylinders. Suitable valve seats are provided between the horizontal water-ways and the outer ends of the cylinders, on which lift or check valves (not shown) may be placed for controlling the admission and discharge of water. These 'alves may be of any suitable and well known construction and it is therefore thought to be unnecessary to illustrate or describe the same. The lower horizontallydisposed water-way a has an inlet opening or openings a therein, which is in communication withthe outer open ends of both cylinders, through lift or check valves in the vertical water-ways at the extreme outer ends of the cylinders. while the upper. horizontal watcuway a has an outlet opening a therein, also in communication with the outercnds of both cylinders through the lift or check valves in the vertically disposed water-ways at the outer ends of the cylinders. A piston or plunger C, preferably hollow, is fitted in each cylinder and protrudes through a stuffing box on the inner end thereof; and the two plungers are connected at their inner ends to a cross-head I), through which passes a tie-rod E, having threaded ends which are screwed into threaded apertures in interior connecting webs or walls of the hollow piston, so that the two plungers are firmly secured together and to the cross-head D, against which their inner ends bear on opposite sides thereof.

. To more firmly secure said parts together,

and to prevent turning of the rod E, set screws 0 may be screwed into the ends of the plungers adjacent the cross-head, as shown in Fig. 3 of the drawings. The stuffing boxes at the inner ends of the cylinders are provided with'suitable packing rings fitting around the plunger so as to provide a water-tight joint, and by means of a gland c the packing may be compressed and easily removed by removing the gland when desired to remove the plunger to permit access to the interior of the cylinder.

The cross-he'ad D, is slidably fitted upon guide-rods F, which are supported in apertured lugs projecting in opposite directions from opposite sides of the pump body or casing, and is connected by pitman rods G, and the usual wrist-pins or studs on the driving connections, to suitable driving gearing mounted upon the jack for imparting a reciprocator'y movement to the plunger or plungers. Theupper tubular bosses or vertical extensions .of the cylinders at their outer ends are each formed or provided with. bifurcated lugs to receive therebetween fastening bolts for the attachment at one end of an air chamber H, and at the other end of a capplate I, in the manner set forth in my patent above mentioned. The outer end of the cylinder A, is provided with a removable head K, whereby access is easily afforded to the interior of the cylinder. By means of a bolster K, which is slidably supported on lugs 6, formed on the jack B, so that the ends thereof bear against the backs of the front shaft-supporting bearings, while its intermediate portion carries a set screw which bears against the removable head K, the head K, is firmly secured in place and may be easily removed by simply unscrewing a single fastening bolt. The outer end of the cylinder A is also closed by a detachable head L, which is secured in place by means of fastening bolts fitted between bifurcated lugs projecting laterally in opposite directions from opposite sides of the cylinder or the vertically disposed water-way thereon, as shown more clearly in Fig. 1 of the drawv ings. The removable head K, may be formed or provided with a valve stop extension is forming an abutment to limit the upward movement of the lift or check valve which controls the inlet to the cylinder A, and a similar projection (not shown) on the cylind'er head L, may serve a similar purpose, with respect to the inlet to the cylinder A The pump casing and jack are preferably cast integrally with supporting legs or standards having apertured lugs or flanges on their lower ends to receive fastening bolts by which said parts may be firmly secured to the floor of a building or other foundation on which the pump is mounted, and the rear standard or supporting leg of the pump casing constitutes the front supporting leg or front end of the jack.

Some of the desirable features and advantages of my improvement may be stated as follows: As will be seen, it is what is known as an outside packed pump, having no brass lining such as is used in the inside packed pump of my prior patent, above mentioned, and the leather packed piston of the inside packed pump is replaced by a cast iron plunger or plungers, which may be either hollow, as shown, or solid, as desired. The outside packed pump, therefore, has no internal wearing parts to be replaced at considerable expense for labor and materials, and in this respect it is superior to the inside packed pump, in the use of which loss of efficiency is not discovered until there is a considerable loss in capacity, as the wearing of the internal parts is not visible, whereas loss of efiiciency by the outside packed pump is immediately detected, as it is caused by the wearing of the packing in the stuflin boxes, on the occurrence of which water leaks from the cylinder through the gland and the leal'- age is at once noticeable and may be immediately stopped by tightening the gland and compressing the packing in the stuffing boxes. The pump being long, narrow and low,'it 100 can be mounted more easily on trucks for portable work than one which is of approximately square dimensions. Such long, narrow construction is also desirable in mine work where the gangways are more often 105 narrow than wide. The two cylinders being open at both ends, permits the use of a boring bar for machining the stuffing boxes and for facing the opposite ends of each cylinder, and the interiors of the cylinders are easily 110 accessible, which is an important item from an operating standpoint. The means employed for holding in place the rear cylinder means for connecting the two pl ungers to the cross-head is also very simple and strong and accessible.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is

1. In combination, a pump body or casing and a jack external thereto and integral therewith, said jack having integral shaftsupporting bearings thereon and said pump body or casing comprising a pair of cylinders arranged in the same horizontal plane and in the 'plane of the jack and each-open at both ends, and means for closing the open. end of the cylinder adjacent the jack comprising a plug fitting the opening in the cylinder head, a bolster resting upon lugs integral with said jack, and seated thereagainst, and a set screw carried by said bolster and impingin against said plug, whereby *the'latter is firmly and removably secured in place. i

2. In a pump, a pump body or casing and a jack external thereto and integral therewith, said jack having integral shaft-sup porting bearings thereon, and said pump body or casing having a pair of cylinders arranged in the same horizontal plane and in the plane of the ack, onecylinder having a removable head adjacent the jack, and means a cross-head slidably fitted upon said rods and a plunger in each cylinder, each plunger being. connected to said cross-head and movable therewlth, and driving gears mounted on said jack together with a pitman rod connecting one of said driving gears with said cross-head for imparting a reoiprocator movement to said plungers.

' 4. In com ination a pump body or casing having a pair of alined cylinders spaced apart, and each having a plunger therein, and apertured lugs projecting in opposite directions from the opposite sides thereof, means for connecting and imparting movement to said plungers comprising guide rods supported in said lugs on opposite sides of the cylinders, a cross-head slidable on said guide rods and connected on opposite sides with said plungers by means of a rod extending through the cross-head and connecting the two plungers so as to hold the several parts together and adapt them to move as one.

5. In combination, a pump body or casing and jack in one integral structure, said pump body having a cylinder open at both ends, the head end thereof being adjacent to the jack and a head-plate for said head end together with means for securing said head plate in place, said means comprising a bolster having its ends supported on said jack and bearing thereagainst, and a screw carried by said bolster and arranged to force said head-plate to its seat.

In testimony whereof I affix my signature in the presence of two witnesses.

v JAMES CARVILL GORMAN, JR. 

